Detailed Inspection Procedures
Follow these structured procedures to ensure a thorough pre-trip inspection of your commercial truck. These procedures align with federal regulations and industry best practices.
Air Brake Test Procedure
- Start engine and build air pressure to governed cut-out (120-140 psi)
- Turn off engine, release parking brake, and press/hold brake pedal
- Observe air gauge - should not drop more than 3 psi in one minute (single vehicle)
- Start engine and rebuild pressure, fan brakes to reduce to 60 psi
- Warning device (light/buzzer) should activate
- Continue fanning brakes - spring brakes should activate at 20-45 psi
Fifth Wheel Connection Check
- Check that trailer is secure against movement
- Check if fifth wheel jaws have properly secured the kingpin
- Verify release lever is in locked position
- Check that trailer apron is resting flush on fifth wheel
- Verify no gap between upper and lower fifth wheel
- If sliding fifth wheel, ensure slide pins are locked
Light Check Procedure
- Turn on headlights, check both low and high beams
- Turn on left turn signal, check front and rear indicators
- Turn on right turn signal, check front and rear indicators
- Activate 4-way hazard lights, check all flashers
- Have someone watch brake lights while you press brake pedal
- Check all clearance, marker, and identification lights
In-Cab Inspection Procedure
- Check seatbelt for proper function and condition
- Adjust and check all mirrors for proper visibility
- Test windshield wipers and washers on dry and wet settings
- Verify all gauges and warning lights illuminate during startup
- Test horn(s) to ensure they're working properly
- Check steering wheel for excessive free play (less than 10°)
Top 5 FAQs
- Why is a pre-trip inspection necessary? Ensures the vehicle is safe to operate, preventing breakdowns and accidents.
- Who performs the pre-trip inspection? Drivers must complete the inspection before each trip, ensuring compliance with DOT regulations.
- What is checked during the pre-trip? Vehicle's safety systems, including brakes, lights, tires, fluid levels, and more.
- How long does the inspection take? Typically 15-30 minutes depending on vehicle type and thoroughness of checks.
- Does FleetRabbit track my inspections? Yes, FleetRabbit allows digital inspection tracking, defect logging, and reporting.